CN211370817U

CN211370817U - Rotor assembly for permanent magnet shield pump

Info

Publication number: CN211370817U
Application number: CN201921693979.XU
Authority: CN
Inventors: 梁泊山; 黄林森; 卢友文; 黄国强
Original assignee: Ningde Contemporary Electric Technology Co ltd
Current assignee: Ningde Contemporary Electric Technology Co ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-08-28
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a rotor subassembly that permanent magnetism shield pump was used, including connecting two water lubricated bearings on the fixed epaxial in the casing, be connected with the rotor shaft between two water lubricated bearings, the rotor shaft is rotatable for the fixed axle through water lubricated bearing, the left end of rotor shaft is connected with the impeller, be connected with rotor core on the rotor shaft, rotor core's surface is connected with one deck rotor housing. The utility model realizes the self-lubricating effect by designing the self-lubricating water channel; the rotor subassembly adopts heat-conducting glue encapsulating formula integral type structure, and the heat conduction is effectual, plays anticorrosion and shielding effect simultaneously, guarantees the high-efficient operation of canned motor pump.

Description

Rotor assembly for permanent magnet shield pump

Technical Field

The utility model relates to a pump technical field especially involves a rotor subassembly that permanent magnetism canned motor pump was used.

Background

The shield pump is a leakage-free pump formed by a pump and a shield motor, is important equipment for conveying special cooling liquid, toxic liquid (such as toxin and smelly liquid), dangerous liquid (such as corrosive liquid, explosive liquid, flammable liquid and volatile liquid) and valuable liquid due to the advantages of no leakage, small volume, low noise and the like, and is widely applied to numerous occasions in the fields of petrochemical industry, national defense and military industry, aerospace, air conditioning refrigeration, cooling liquid cooling systems, medical food, atomic energy and the like.

The heat conduction effect of the shield pump in the prior art is poor, and the performance of the motor is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the weak point among the above-mentioned prior art and provide a simple structure, convenient operation, practical rotor subassembly for permanent magnetism shield pump.

The utility model discloses a realize through following mode:

the utility model provides a rotor subassembly that permanent magnetism shield pump was used, is connected with the rotor shaft including connecting two water lubricated bearings on the fixed axle in the casing between two water lubricated bearings, the rotor shaft is rotatable for the fixed axle through water lubricated bearing, the left end of rotor shaft is connected with the impeller, be connected with rotor core on the rotor shaft, rotor core's surface is connected with one deck rotor housing.

Furthermore, second heat-conducting glue is filled among the rotor shielding sleeve, the rotor iron core and the rotor shaft, so that the rotor shielding sleeve, the rotor iron core and the rotor shaft form a whole.

Further, the inner wall of the water-lubricated bearing is provided with a self-lubricating water channel.

Further, a balance ring is connected to the rotor shaft.

Furthermore, the material of the rotor shaft is 316 stainless steel; the water lubrication bearing is made of polyether-ether-ketone added with fiber; the impeller is made of 316 stainless steel.

The beneficial effects of the utility model reside in that: the structure is reasonable, the design is ingenious, the cost is saved, and the self-lubricating effect is realized by designing the self-lubricating water channel; the rotor subassembly adopts heat-conducting glue encapsulating formula integral type structure respectively, and the heat conduction is effectual, guarantees the high-efficient operation of canned motor pump.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

a rotor assembly for a permanent magnet canned motor pump, as shown in FIG. 1, comprises a fixed shaft connected in a housing through a shaft sleeve, wherein the shaft sleeve and the fixed shaft are connected together through a flat head and do not rotate; the fixed shaft is made of ceramics, the left side and the right side of the fixed shaft are respectively connected with a water lubrication bearing 42, a rotor shaft 43 is connected between the two water lubrication bearings 42, the rotor shaft 43 is hollow, the outer ring of the water lubrication bearing 42 is connected with the inner wall of the rotor shaft 43 in an interference fit manner, and the inner wall of the water lubrication bearing 42 is provided with a self-lubricating water channel 421, so that the strength is ensured and the self-lubricating requirement is met; the rotor shaft 43 can rotate relative to the fixed shaft through the water lubricating bearing 42, the left end of the rotor shaft 43 is connected with the impeller 44 in an interference fit mode, the impeller 44 is located in the impeller cavity, and the impeller 44 works to drive a medium to enter from the liquid inlet and flow out from the liquid outlet; the rotor shaft 43 is connected with a rotor core 45 matched with a winding stator, and the specific structure of the rotor core 45 is conventional and will not be described in detail herein; the surface of the rotor core 45 is connected with a layer of rotor shielding sleeve 46, and second heat-conducting glue 47 is filled among the rotor shielding sleeve 46, the rotor core 45 and the rotor shaft 43, so that the rotor shielding sleeve 46, the rotor core 45 and the rotor shaft 43 form a whole, and the effects of protection, isolation, heat conduction and insulation on the rotor core 45 are achieved.

Further, in order to protect the rotor core 45 from being more stable during operation, a balance ring 48 is connected to the rotor shaft 43.

Further, the rotor shaft 43 is made of 316 stainless steel, the water lubrication bearing 42 is made of fiber-added polyetheretherketone, so that a silencing effect is achieved, the impeller 44 is made of 316 stainless steel, and the shaft sleeve is made of ceramic, so that corrosion resistance and shielding effects can be achieved.

During specific work, after the winding stator is switched on with alternating current, the winding stator is made to generate magnetism, the rotor core 45 is stressed, the rotor core 45 rotates when the winding stator is switched on with external alternating current, and therefore the rotor shaft 43 is driven to rotate, the rotor shaft 43 is provided with the impeller 44 to rotate, when the impeller 44 rotates, a driving medium enters from the liquid inlet and flows out of the liquid outlet, and work is completed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a rotor subassembly that permanent magnetism shield pump was used which characterized in that: including connecting two water lubricated bearing (42) on the fixed axle in the casing, be connected with rotor shaft (43) between two water lubricated bearing (42), rotor shaft (43) are rotatable for the fixed axle through water lubricated bearing (42), the left end of rotor shaft (43) is connected with impeller (44), be connected with rotor core (45) on rotor shaft (43), the surface of rotor core (45) is connected with one deck rotor housing (46).

2. A rotor assembly for a permanent magnet canned pump according to claim 1, wherein: and second heat-conducting glue (47) is filled among the rotor shielding sleeve (46), the rotor iron core (45) and the rotor shaft (43), so that the rotor shielding sleeve (46), the rotor iron core (45) and the rotor shaft (43) form a whole.

3. A rotor assembly for a permanent magnet canned pump according to claim 1, wherein: and a self-lubricating water channel (421) is arranged on the inner wall of the water lubricating bearing (42).

4. A rotor assembly for a permanent magnet canned pump according to claim 1, wherein: the rotor shaft (43) is connected with a balance ring (48).

5. A rotor assembly for a permanent magnet canned pump according to claim 1, wherein: the rotor shaft (43) is made of 316 stainless steel; the water lubrication bearing (42) is made of fiber-added polyether ether ketone; the impeller (44) is made of 316 stainless steel.